Clone server using Make_tape_recovery with diferent capacity.

[Aranzazu]

Hello,
I have a server (itanium) with three 72Gb disks in vg00, and I want to clone it using make_tape_recovery in a server with three disks of 146Gb ¿It can be made?

[eran maor]

Hi

it can be done , if the server are the same , this will not be a problem .

but ... you need to remember that you can boot from a tape on itanium system , use this prod. to boot the clone system and to restore the info from a make_tape_recovery tape .

the easy way to do it is with make_net_recovery but you will need to setup a ignite server for that .

eran maor

[Aranzazu]

Sorry, I don´t understand why i need a ignite server.
The real case is:
I have a server with vg00 has three 72Gb disks.
I am goping to change this disks for another three of 142gb capacity.

But when I recover the system in the 142Gb disks, ¿Are the vg00 recognize the 142Gb disk? Or it is going to show 72Gb disks.
And another question, ¿what will the Max PE per PV be, with default is 4328?
I would like to chage it in order to used all the space.

[Aranzazu]

Sorry, I don´t understand why i need a ignite server.
The real case is:
I have a server with vg00 has three 72Gb disks.
I am goping to change this disks for another three of 142gb capacity.

But when I recover the system in the 142Gb disks, ¿Are the vg00 recognize the 142Gb disk? Or it is going to show 72Gb disks.
And another question, ¿what will the Max PE per PV be, with default is 4328?
I would like to chage it in order to used all the space.

[Garry Ferguson]

Aranzazu,
If you are not restoring to IDENTICAL hardware - as you will not be, then the restore process can be tailored to your requirements. e.g ....

boot p1 - to boot from the tape.
When prompted with "Interact with IPL (Y,N, or Cancel)?>" type n.
To customise the install process then interrupt it a short while later when it prompts with "Press within 10 seconds to cancel batch-mode installation:"
This is required, for instance, if restoring to a machine with different hard disk sizes from the original.

You are then allow to setup the machine as you wish before continuing the restore.

Can't answer your PE enquiry I'm afraid.

Regards,
Garry

[Ravi_8]

Yes, it cam be.
but all the 3 disks(146GB) will be used( because of /etc/lvmtab from source machine) apart from that out of 146GB in each disk only 72 GB will be used.

[Garry Ferguson]

In my experience, if you interrupt make_recovery it allows you to set the disks up however you want before doing the restore. There wouldn't be much point in it allowing you to do that if the restore then just overwrote all your new, carefully considered setup with the old system's config files!

[Aranzazu]

Ravi, ¿Why you say i will not see 146Gb disks?
Can not make the recovery detect the size od the disk?
Thanks to all for your anwer

[Aranzazu]

Ravi, ¿Why you say i will not see 146Gb disks?
Can not make the recovery detect the size od the disk?
Thanks to all for your anwer

[Trond Haugen · Accepted solution]

You should use the '-I' option to make_tape_recovery to make the restore interactive (if you want to change anything). If only the disk size differ you don't need to change anything.
When restoring vg00 will be created so it will make use of the entire disk.

Regards,
Trond